JPS55155275A - Ultrasonic type snow deposition meter - Google Patents

Ultrasonic type snow deposition meter

Info

Publication number
JPS55155275A
JPS55155275A JP6442879A JP6442879A JPS55155275A JP S55155275 A JPS55155275 A JP S55155275A JP 6442879 A JP6442879 A JP 6442879A JP 6442879 A JP6442879 A JP 6442879A JP S55155275 A JPS55155275 A JP S55155275A
Authority
JP
Japan
Prior art keywords
section
converter
gain
control section
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6442879A
Other languages
Japanese (ja)
Inventor
Junichiro Tsurumaru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6442879A priority Critical patent/JPS55155275A/en
Publication of JPS55155275A publication Critical patent/JPS55155275A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To enable high-accurate measurement, by receiving reflected waves through an automatic gain control circuit and applying a control signal as an output through a D/A converter.
CONSTITUTION: The device comprises a control section 1 made of a microcomputer, a transmitting section 2, a receiving section 3 and a temperature measuring section 5. The control section 1 counts the output pulses P of a Schmitt circuit 3d. When the counted value is smaller than a prescribed number, a digital signal is applied to a D/A converter 4 to increase the gain of an AGC amplifier 3c. When the counted value is larger than the prescribed number, a digital signal is applied to the D/A converter 4 to decrease the gain of the amplifier 3c. The time from the emission of tone burst waves to their reception is determined by the control section 1 and multiplied by the sound velocity compensated by a measured temperature value, thereby determining the distance from a head to the surface of snow. The distance is substracted from that between the head and the surface of the ground to determine the depth of the deposited snow.
COPYRIGHT: (C)1980,JPO&Japio
JP6442879A 1979-05-24 1979-05-24 Ultrasonic type snow deposition meter Pending JPS55155275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6442879A JPS55155275A (en) 1979-05-24 1979-05-24 Ultrasonic type snow deposition meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6442879A JPS55155275A (en) 1979-05-24 1979-05-24 Ultrasonic type snow deposition meter

Publications (1)

Publication Number Publication Date
JPS55155275A true JPS55155275A (en) 1980-12-03

Family

ID=13257989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6442879A Pending JPS55155275A (en) 1979-05-24 1979-05-24 Ultrasonic type snow deposition meter

Country Status (1)

Country Link
JP (1) JPS55155275A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10186060A (en) * 1996-12-27 1998-07-14 Nagoya Denki Kogyo Kk Ultrasonic snow gauge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10186060A (en) * 1996-12-27 1998-07-14 Nagoya Denki Kogyo Kk Ultrasonic snow gauge

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